11784217019719 has 2 divisors, whose sum is σ = 11784217019720. Its totient is φ = 11784217019718.

The previous prime is 11784217019717. The next prime is 11784217019749. The reversal of 11784217019719 is 91791071248711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11784217019719 - 2¹ = 11784217019717 is a prime.

It is a super-2 number, since 2×11784217019719² (a number of 27 digits) contains 22 as substring.

Together with 11784217019717, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11784217019717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5892108509859 + 5892108509860.

It is an arithmetic number, because the mean of its divisors is an integer number (5892108509860).

Almost surely, 2^{11784217019719} is an apocalyptic number.

11784217019719 is a deficient number, since it is larger than the sum of its proper divisors (1).

11784217019719 is an equidigital number, since it uses as much as digits as its factorization.

11784217019719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1778112, while the sum is 58.

The spelling of 11784217019719 in words is "eleven trillion, seven hundred eighty-four billion, two hundred seventeen million, nineteen thousand, seven hundred nineteen".